Properties Held for Sale and Property Dispositions (Details) $ in Millions	1 Months Ended
Jan. 31, 2022 USD ($) ft²	Mar. 31, 2022 USD ($) ft²
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Area of office building (sqft) \| ft²		27,549,252
1080 Amsterdam Avenue
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales price		$ 42.7
707 Eleventh Avenue
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales price	$ 95.0
Area of office building (sqft) \| ft²	159,720
Gain (loss)	$ (0.8)

Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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